by Gilkey Group on WordPress.org
Add internal notes to posts and pages directly from the Quick Edit interface and block editor in WordPress.

Notes section in the block editor when editing a page, allowing for internal notes and comments
Quick Edit Notes enhances collaboration among content editors by adding a “Notes” field to the Quick Edit interface. This feature allows editors to leave internal notes about posts and pages directly within the WordPress dashboard.
Quick Edit Notes does not collect, store, or share any personal data from your site visitors. The notes feature is purely for internal use within your WordPress admin area.